zoom rectangle with PHP

[Nemmert, Andreas]

Hi list

 

I am a student of Geoinformation and have to set up a UMN server for my
internship. I have to use PHP. I still have programmed the functions zoom in
and zoom out, with zoompoint. But now I want to use zoommrectangle. 

My question: how do I get the 4 coordinates of the rectangle the user
raises?

Thank you for your help!

 

Andres

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